2870313921 has 16 divisors (see below), whose sum is σ = 4258915200. Its totient is φ = 1910573424.

The previous prime is 2870313877. The next prime is 2870313931. The reversal of 2870313921 is 1293130782.

It is a de Polignac number, because none of the positive numbers 2^k-2870313921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2870313931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64686 + ... + 99623.

It is an arithmetic number, because the mean of its divisors is an integer number (266182200).

Almost surely, 2^2870313921 is an apocalyptic number.

It is an amenable number.

2870313921 is a deficient number, since it is larger than the sum of its proper divisors (1388601279).

2870313921 is a wasteful number, since it uses less digits than its factorization.

2870313921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164965 (or 164959 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2870313921 is about 53575.3107410494. The cubic root of 2870313921 is about 1421.1605141339.

It can be divided in two parts, 28703 and 13921, that added together give a palindrome (42624).

The spelling of 2870313921 in words is "two billion, eight hundred seventy million, three hundred thirteen thousand, nine hundred twenty-one".